[FFmpeg-user] Draw original timecode on the output file

[Paul B Mahol]

On 9/27/13, Ivaylo Spasov <ivaylo.pif at gmail.com> wrote:
> On Fri, Sep 27, 2013 at 10:24 AM, Carl Eugen Hoyos <cehoyos at ag.or.at>
> wrote:
>> avi does not store pts, so depending on your use case
>> you may want to replace pts with dts in your command
>> line.
>>
>> Carl Eugen
>
> When I replace pts with dts in the following command
>
> ffmpeg -i input.avi -vsync passthrough -copyts -copytb 1 -vf
> "scale=480:-1,drawtext=fontsize=18:fontfile=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSansMono-Bold.ttf:box=1:text='%{dts}':x=(w-text_w-5):y=(h-text_h-5)"
> -c:v libx264 -preset ultrafast -threads 2 -crf 28 -c:a libfdk_aac -ac
> 2 RY.mp4
>
> I get many times the following error:
>
> [Parsed_drawtext_1 @ 0x988d520] %{dts} is not known
>     Last message repeated 31 times
> [Parsed_drawtext_1 @ 0x988d520] %{dts} is not known00:03.28
> bitrate=1662.8kbits/s
>     Last message repeated 85 times
>
>
> and in the output file there is only the word "dts" printed, not
> numbers of anykind. Do you know what is the reason for that?

Because 'dts' is not mentioned in drawtext filter documentation.